embOS for RENESAS RX was developed for and with KPIT GNU compiler and supports all data memory models offered by this compiler.
embOS for RX comes with an easy to use start project for an RX610 and RX62N CPU which may be used with the HEW.
Software development and debugging with E20 emulator as well as using J-Link is supported.

Resources and performance data

Memory usage
Kernel size (ROM)	approx. 1500 bytes
Kernel RAM usage	63 bytes
RAM usage per task control block	20 bytes
RAM usage per resource semaphore	16 bytes
RAM usage per counting semaphore	8 bytes
RAM usage per mailbox	24 bytes
RAM usage per software timer	20 bytes
RAM usage event	0 bytes
Min. stack-size per task (RAM)	56 bytes
Timing
Context switch time	127 clock cycles (2.6 µs), independent of number of tasks
Interrupt latency time	max. 90 clock cycles (0.9 µs)
Kernel CPU usage/TICK	less than .1% of total calculation time at 1000 Interrupts/second (1ms TICK)
Basic time unit (TICK)	typ. 1 ms, min. 10 µs (100 kHz interrupt frequency)
Features
Max. no. of tasks	Unlimited (by available RAM only)
Max. no. of mailboxes	unlimited (by available RAM only)
Max. no. of semaphores (resource/binary/counting)	unlimited (by available RAM only)
Max. no. of software timers	unlimited (by available RAM only)
Max. no. of priorities	255
Stack size idle task (RAM)	0(no memory needed)
Nested interrupts	permitted
Task switches from within ISR	possible

Absolute data given above were measured with embOS x-release build on an RX610 CPU running at 100MHz.

embOSView offers system analysis during runtime

Available Emulators

• RENESAS E20
• J-Link RX

Additional information

RENESAS Web site for additional CPU info / support

 

Board support packages

embOS comes with lots of ready to go start projects and support packages for various Renesas RX CPUs and starterboards.

CPU	Eval board
Renesas RX210	Renesas RPBRX210
Renesas RX210	Renesas RSKRX210
Renesas RX62N	Renesas RPBRX62N
Renesas RX62N	Future Designs YRDKRX62N
Renesas RX62N	Renesas RSKRX62N
Renesas RX610	Renesas RSKRX610
Renesas RX62T	Renesas RSKRX62T
Renesas RX630	Renesas RSKRX630
Renesas RX63N	Future Designs YRDKRX63N

 

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Release notes for embOS Version 3.86a for RX using KPIT GNU compiler and HEW

1. Tool chain used for build
2. New features
3. Improvements
4. Program corrections
5. Known problems/limitations
6. Release history
7. Miscellaneous

Tool chain used for build

The following tools have been used:

Compiler:  KPIT GNU GCC  V4.5-GNURX_v11.03
Assembler: KPIT GNU AS   V2.21-GNURX_v11.03.20110113
Librarian: KPIT GNU AR   V2.21-GNURX_v11.03.20110113
Workbench: KPIT GNU HEW  V4.09.00.007

New features

Version 3.86

1. Update to latest embOS generic sources.
2. BSP for RSKRX62T and Serious SIM 205 eval board added.

Version 3.82x

1. Update to latest embOS generic sources.
2. BSP for RPBRX210, RSKRX630 and YRDKRX63N added.

Version 3.82v

1. Update to latest embOS generic sources.
2. BSP for RDKRX210 added.

Version 3.82n

1. Update to latest embOS generic sources.
2. BSP for RPBRX62N added.

Version 3.82k

1. Initial version
   Version 3.82k is the initial version of embOS RX for HEW and KPIT GNU tools. It is based on embOS sources V3.82k.

Improvements

Version 3.82k

1. NONE
   Initial version based on embOS sources version 3.82k

Program corrections

Version 3.86a

1. Queue handling corrected.

Version 3.82n

1. Queue handling corrected.

Version 3.82k

1. NONE
   Initial version based on embOS sources version 3.82k

Known problems/limitations

Version 3.82k

1. NONE
   Initial version based on embOS sources version 3.82k

Release history

Version	Release date	Short explanation
V3.86a	30. Apr 2012	Queue handling corrected.
V3.86	29. Mar 2012	Update to latest embOS generic sources and BSPs added.
V3.82x	13. Sep 2011	Update to latest embOS generic sources and BSPs added.
V3.82v	03. Aug 2011	Update to latest embOS generic sources and BSP added.
V3.82n	13. Dec 2010	Update to latest embOS generic sources and BSP added.
V3.82k	20. Oct 2010	Initial version.

Miscellaneous

This document was first released with version 3.82k of the software.
Software released earlier is documented internally. This information is available at request.